Learning color receptive fields and color differential structure

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Abstract

In this paper we study the role of brain plasticity, and investigate the emergence and self-emergence of receptive fields from scalar and color natural images by principal component analysis of image patches. We describe the classical experiment on localized PCA on center-surround weighted patches of natural scalar images. The resulting set turns out to show great similarity to Gaussian spatial derivatives, and exhibits steerability behavior. We then relate the famous experiment by Blakemore of training a cat with only visual horizontal bar information with PCA analysis of images with primarily unidirectional structure. PCA is performed for patches of RGB natural color images. The resulting profiles resemble spatio-spectral operators extracting color differential structure and shape. We discuss how spatio-spectral Gaussian derivative operators along the wavelength dimension can be modeled, originally proposed by Koenderink, and based on Hering's opponent color theory. The discussion puts the PCA findings in the perspective of multi-scale Gaussian differential geometry, multi-orientation sub-Riemannian geometry, and PCA on affinity matrices for contextual models.

Original languageEnglish
Title of host publication11th International Conference on Natural Computation, ICNC 2015, 15-17 August 2015, Zhangjiajie, China
Place of PublicationBrussels
PublisherIEEE Computer Society
Pages143-148
Number of pages6
Volume2016
ISBN (Print)9781467376792
DOIs
Publication statusPublished - 8 Jan 2016
Event11th International Conference on Natural Computation (ICNC 2015) - Zhangjiajie, China
Duration: 15 Aug 201517 Aug 2015
Conference number: 11
http://icnc-fskd.hnu.edu.cn/2015/

Conference

Conference11th International Conference on Natural Computation (ICNC 2015)
Abbreviated titleICNC '15
CountryChina
CityZhangjiajie
Period15/08/1517/08/15
OtherConference held jointly with the 12th International Conference on Fuzzy Systems and Knowledge Discovery (FSKD '15)
Internet address

Keywords

  • color
  • Differential structure
  • principal component analysis
  • Receptive fields

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